Riccardo Giacconi's Impact on Japanese X-ray Astronomy

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Riccardo Giacconi played a significant role in Japanese X-ray astronomy, influencing the first generation of X-ray astronomers in Japan and contributing to the development of X-ray telescopes. His visits and collaborations with Japanese scientists, such as Hideyo Kunieda and Yasuo Tanaka, were instrumental in advancing the field. Giacconi's work paved the way for groundbreaking projects like ASCA and Chandra, leaving a lasting legacy in the realm of X-ray astronomy.

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Giacconis impact on Japanese X-ray astronomy Hideyo Kunieda Nagoya University

First generation X-ray astronomers in Japan Minoru Oda (1923-2001) 1953-1956 1963-1966 MIT(Rossi) Satio Hayakawa (1923-1992) Riccardo Giacconi (1931-2018) Yasuo Tanaka (1931-2018) 1963-1967 Leiden(Netherlands)

First encounter Visit to Nagoya in 1976 Text Book X-ray Astronomy Giacconi &Gursky(1974) My motivation for pressing forward was a deep-seated faith in the boundless resourcefulness of nature, which so often leaves the most daring imagination of man far behind . Rocket Experiment in June 1962

In 1978-1979 Einstein (Nov. 13, 1978) 3130 kg Hakucho Feb. 21, 1979 96 kg UHURU (1970) kg Soft X-ray Telescope Proportional Counter with Modulation Collimators

ASCA Chandra (Jul. 23, 1999) 4800 kg In 1990 s (Feb. 20, 1993) 420 kg X-ray telescope FL=10m E 10 keV High throughput X-ray telescopes FL = 3.6 m E 10 keV

Nobel Lecture in Tokyo During ALAM meeting (NAOJ) February 27, 2004 At the time of UHURU, we got a Hot Line to nature, I felt. The next step in Dr. Giacconi s plan to open a new hotline to nature,,,, (In the OBITUARIES of the New York Times on Dec. 13, 2018.)

Last encounter "X-Ray Astronomy: towards the next50 years! (October 2012 at Milan) Lunch meeting on Wide Field X-ray Telescope (WFXT) The sensitivity and area of the planned Subaru surveys, as well as other wide-area surveys planned at other wavelengths over the next decade, are a great match for WFXT's ambitious science goals. Perseus Cluster Mar. 2016 Riccardo Giacconi Stephen S Murray Martin C. Weisskopf Tommaso Maccacaro Roberto Della Ceca Gianpiero Tagliaferri Sergio Campana Oberto Citterio Maurizio Paolillo Paolo Tozzi Roberto Gilli Stefano Borgani Piero Rosati Yasuo Tanaka Hideyo Kunieda Tadayuki Takahashi Kazuo Makishima We are concentrating to ASTRO-H preparation to focus on soft X-ray high resolution spectroscopy and broad band imaging, which are complementary to the high resolution imaging.